Snow blower season

[Skippy722]

How? you take 369 divided by 15 and you get the horsepower of 24.6. That’s a universal mathematical formula for calculating horsepower no matter who makes the engine. So if you want the cc of 11 horsepower 11x15 = 165 CC

According to that my lawnmower should have 48hp, which comes out to about double what it actually is… same for my snowblower.

Though it’s close for say my truck, it spits out 380hp for 5700cc, it’s actually 395hp.

 

[Bearguy69]

Ignore that link and try some real world calculations.

Well then instead of being super helpful here mr. Math why don’t you show us your formula for solving simple algebra. Because here is the equation x is horsepower 15 is the constant and CC is the known. So if you have 300cc and you want HP. It would be X=CC/15 solve for X that’s the formula in every conversion equation for cubic centimeters to horsepower. Unless you are privileged to have a different formula that you have I would be much appreciative to learn it.

 

[Bearguy69]

According to that my lawnmower should have 48hp, which comes out to about double what it actually is… same for my snowblower.

Though it’s close for say my truck, it spits out 380hp for 5700cc, it’s actually 395hp.

I know that’s the equation CCs are CCs you don’t have special ones for small engines and different ones for regular engines. So I don’t know what to tell you. I am not the mathematician that created the formula

 

[Bearguy69]

 

[Bearguy69]

Yeah I just did a tune-up on a neighbor's snowblower this weekend. His had gas of similar age, and when I drained it out, it looked like orange juice.

Yikes

 

[Skippy722]

I know that’s the equation CCs are CCs you don’t have special ones for small engines and different ones for regular engines. So I don’t know what to tell you. I am not the mathematician that created the formula

That calculator is using a vague estimation on how many CC’s produce 1HP. There’s another that involves CC/32.2 that’s more accurate for small engines. 726cc/32.2=22.5HP, or almost what my lawnmower for example makes (23hp).

I think the calculator you linked accounts for the higher engine speed of larger engines, while small engines HP is almost always rated at 3600rpm (per SAE spec).

 

[Bearguy69]

That calculator is using a vague estimation on how many CC’s produce 1HP. There’s another that involves CC/32.2 that’s more accurate for small engines. 726cc/32.2=22.5HP, or almost what my lawnmower for example makes (23hp).

I think the calculator you linked accounts for the higher engine speed of larger engines, while small engines HP is almost always rated at 3600rpm (per SAE spec).

Thanks for the info I really appreciate it very educational information.

 

[odie]

Toro single stage here. Used to put it in the hatch of my Prius at the time and do peoples driveways. Kind of a baffled look when you pull up in a Prius and pull a snow blower out and get the job done. Winter tires helped me get there and to the next stop.

Never used it on more than 14-15 inches though. Just don’t get many heavy snows here In Indianapolis

The '07 Prius we had was very good in the snow Likely due to the battery under the rear seat and the weight it distributed to the rear wheels . The tires were GOODYEAR Integrity (?) .

 

[Astro_Guy]

According to that my lawnmower should have 48hp, which comes out to about double what it actually is… same for my snowblower.

Though it’s close for say my truck, it spits out 380hp for 5700cc, it’s actually 395hp.

The 724cc V-Twin in my rider is rated at 22 HP. Using the factor of 32 cc/HP I mentioned in an earlier post, 22 HP = 704cc. That's pretty darn close.

 

[Astro_Guy]

Well then instead of being super helpful here mr. Math why don’t you show us your formula for solving simple algebra. Because here is the equation x is horsepower 15 is the constant and CC is the known. So if you have 300cc and you want HP. It would be X=CC/15 solve for X that’s the formula in every conversion equation for cubic centimeters to horsepower. Unless you are privileged to have a different formula that you have I would be much appreciative to learn it.

No, no, NO! Do the math using known examples. I've provided three now in two separate posts. 32cc per horsepower is closer to reality for small air cooled OPE engines.

Using your formula the 22 HP 724cc B&S V-Twin on my rider would have over 48 horsepower. I've seen the article you are basing this on, and it is total BS.

BTW - Welcome to BITOG! Expect to learn a lot here.

 

[Bearguy69]

No, no, NO! Do the math using known examples. I've provided three now in two separate posts. 32cc per horsepower is closer to reality for small air cooled OPE engines.

Using your formula the 22 HP 724cc B&S V-Twin on my rider would have over 48 horsepower. I've seen the article you are basing this on, and it is total BS.

BTW - Welcome to BITOG! Expect to learn a lot here.

Oh so you mean this equation for finding the displacement of a given engine to find cubic centimeters.
V = π/4 x (D)² x H x N